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Leiditech PESD2442U005
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Leiditech PESD2442U005
- Type
- LEIDITECH
- Minimum package
- 10000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LEIDITECH
- Electronic Component
- PESD2442U005
- Electronic Component
- 1
- Package
- 0402
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.007g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Cj- Capacitor
- 0.05pF
- Electronic Component
- BM0226990898
- Operating Temperature
- 40℃~+90℃
- Voltage
- 35V
- Electronic Component
- IEC 61000-4-2
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PESD2442U005 产品概述
一、产品简介
PESD2442U005 是莱卯电子（Leiditech）推出的一款单路、双向静电放电（ESD）保护二极管，封装为0402。器件针对高速信号线及空间受限的电子设备设计，具有极低的结电容（Cj = 0.05 pF）、极小的漏电流（Ir ≈ 0.1 μA / 100 nA）和较高的钳位能力（钳位电压典型值 35 V），工作温度范围为 −40 ℃ 至 +90 ℃，并满足 IEC 61000‑4‑2 静电放电防护等级要求。
二、主要性能亮点
- 钳位电压：35 V（典型），对冲击脉冲有良好能量吸收和限制能力。
- 结电容：0.05 pF，极低的电容对高速差分或单端信号几乎无负载影响，适合高带宽接口。
- 漏电流：100 nA（0.1 μA），保证高阻抗电路或精密模拟前端的低干扰。
- 极性：双向，支持正负极性瞬态干扰的抑制，无需外加反向元件。
- 通道数：单路，适用于单信号线的保护设计。
- 封装：0402，适合高密度 PCB 布局与便携式终端应用。
- 工作温度：−40 ℃ 至 +90 ℃，适应工业级温度需求。
- 标准：符合 IEC 61000‑4‑2 ESD 抗扰标准。
三、典型应用场景
- 移动终端、平板、笔记本触控/传感信号保护
- 摄像头模组、图像传感器的数据/控制线保护
- 高速差分/单端接口（如低速差分对、UART、I2C、SPI 等）要求极低电容影响的场合
- 工业控制与传感器接口，要求宽工作温度与低漏电流的系统
- IoT 终端、可穿戴设备等对尺寸和信号完整性敏感的产品
四、设计与布局建议
- 尽量将 PESD2442U005 靠近受保护的连接器或信号引脚放置，减少未受保护段的走线长度。
- 为实现最佳放电路径，应将二极管的 GND 端通过短而粗的走线或地铜箔直接连接到系统地，并在需要时添加过孔形成低阻抗回路。
- 对高速信号线，保持最小的串联阻抗和匹配阻抗，避免在二极管前后产生不必要的阻抗突变；必要时配合小阻值串联阻抗或差分阻抗布局优化。
- 0402 封装对焊接热循环敏感，建议按照器件供应商提供的回流曲线及 IPC/JEDEC 焊接规范进行组装与焊接工艺控制。
五、可靠性与选型要点
- 低结电容与低漏电流使该器件非常适合对信号完整性要求高且对静态偏置敏感的电路。
- 双向结构适合双向数据线或可能出现两极性瞬态的应用，简化电路设计。
- 在需要多通道保护时，可并行选用多颗或考虑多路封装器件以节省 PCB 空间。
- 选择时关注实际钳位能量、浪涌承受能力以及在特定系统 ESD 事件（如接触放电或空气放电）下的极限表现，可向供应商索取更完整的测试数据与曲线。
如需进一步的电气特性曲线、焊接工艺建议或参考布局示意图，可提供具体应用场景与 PCB 草图，我可据此给出更精细的设计建议与仿真要点。
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